Bracket type scaffolding, adjustable in height, slidingly, for concrete wall erection



July 7, 1959 l.. FAYE BRACKET TYPE sCAEEoLDTNC, ADJUSTABLE TN HEIGHT,sETDINCLy, FOR CONCRETE WALL ERECTION @sheets-sheet@ Filed Feb. ll. 1957July 7, 1959 2,893,786

L. FAYE BRACKET TYPE SCAFFOLDING, ADJUSTABLE IN HEIGHT, SLIDINGLY, FORCONCRETE WALL ERECTION Filed Feb. 1l, 1957 2 Sheets-Sheet2 BRACKET TYPESCAFFOLDING; ADLIUSTABLE IN v `Iel1LIGIJ1il-`,\` SLIDINGLY,FORI'CONCRE'IE- WALL There has` been disclosed,v in applicant-s previousFrench Patent No.` 998,293, of October 28, 1949,. and inthe patententitled Flanking Apparatusrfor Concrete' Walls, ledon February I5,1955-, a planning apparatus for the erection.. of, .concrete wallsinsuccessive courses-, which consists essential-ly of poler elements', tobeasuperposed on one another.

The positioning. of .apparatus-as: weli as; .the casting operations forthe successive concrete courses require a seatoldingwhich, according toknown methods `and for walls-nota certain height, is dicult to buildVand not Mery' convenient in use.

The object ofthis. invention is an apparatus, which makes it: possiblevtoform a bracket' type scaioldiug mounted slidingly on the erectedportion; off the wall to be built, and'. movable upwards by thel heighton' one course after the casting ofeaclr course;

In this apparatus, rectilinear elements of: ai rollinggt-rack shouldabesecured vertically, end to end; against the workingr face of the wall tobe erected-f for formi-nga rolling ,track extendingdown-wa-rds Iof eachcolumnA of. pole elements or certa-in of these columns,.fone uprightfforeachl one of these coiumns-z Iof poleelements carriesl avpairi ofupperrollers for rolling engagement inside the rolling track, andi a: lowerroller for carrying. against the face of' the Wa ll av removable.bracket. to be. secured Vagainst face of the wall and whichsupportsdheL-Weight ofi-.the upright and holds it atthe required heightfor. thegerecti'ori ofV gael;Y course, andalso supports doors restingat=various leuels on twol consecutive. uprightsi ser-vingI as workingstations.

The. nature and advantages of this invention will. kap,- pearmorecompletely from` thedeseription o onetype of embodiment which: will be.given hereinafter by way of illustrative and nonlimitative example, withreference to theappendeddrawingwherein: v Figure: 1 shows,in section, a.concrete Wall, beingbuilt the. completion. of the. casting forwhich` thetwo. pieces of planking and scaffolding apparatus have been placed'` inposition. f Y

Figures 2 to. 6 are, sections,` on a, larger scale, respeta` tivglyalong IIe-II tol VI.--\ZIY of Figure 1Y showing various details.. Y

I n the arrangement.' represented in the drawings, the Generate; wall 1fis being erected' by using, on rveach face, planking columns formed;` ofthree superposed pole elemental! The scafioldirrgA apparatus accordingt0. die invention is'to bel mounted' along theworling'face. Y The righthand face, according to the section in Figure l, c o'rrnpiises threeidentical rolling track elements. Seach; having the, height offaconcrete course and tohear'ranged :United States vPatent:

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2 v vertically, end to end, and under the column of. the three poleelements 2 against the workingv face. Each one' oi these rolling trackelements 3 consists of a square tube bored with a hole in the face-to4be laid against the working face, and with twoV holes in register intheside faces. and provided withA a longitudinal slot on theL front face.Each one of these elements 3 thus constituted is secured against theworking face,` as may be seen in Figures 2 and. 3 by screwing a nut 4 ona bolt 5.v Said bolt 5f whichy is engaged inv one of. the holes leftfree: through? the wall by the removal of the assembling rods Z3' oftheremoved planking apparatus used for the erection of that portion of theWalla The head of this bolt 5A which bears on the face of the wallopposite the working fac'eis shaped'with a bearing collar and ananchoring spike' entering the concrete when the collar is brought tobear and thus immobilizing the bolt in rotation.

The apparatus also comprisesl an upright which-fis formed, essentially,of a pair of angle irons 6, 6 spaced? fromv each other and of anotherpair of angle irons 7,. 7 with the 4same spacing, which: angle ironpairs' aref connected together by tubes 8, 9;'10, each one-of which is Vbolted, throughv each one' of. its ends, between two angle irons 6, 6and7, 7v of` one ofthe Vtwo pairs. Tle two pairs' of angle irons 6, 6- and`7, 7; are also connected by a tier bolt formed lof twoy ilat parts 11,1-1 united by bolting on both sides of. two at irons-12 andk I3. The`ilat iron. 13, which is arranged between' the two angle: irons 6, 6extends towards thev working face beyond) these angler irons and=carries a pair of rollers 14 which.- engage inside 'the rolling trackand, specifically, inA that portironof the rolling trackconstituted bytheirst one; from the bottom, of' thev three elements 31 Eachv` one ofthe two ends of a square-tube 15 is bolted betweenthe lower ends` ofvthe tvv'o angle ironsL 6,6- and of=ftlhe two angle irons 7, V7 andthisysquare tube 15 carriesv ribs 16, 17 through which slides a flatiron1-,8;` oneend' of which, extending beyond the painV of angle irons6', 6 towardsY the working face is.' terminated by a2 pair of= rollers19,. 19 bearing onfthat face. The pair-of rollers 19, 19 is madey tobearagainst the` wor-king` face z'tcclo'rcl-r ing to an adjustable positionby afscrew 36 engaging a lixed nut 3'7-'welded onthesquare tubef15,

At the heightv of one concrete courseabove thev tie-bolts 121-13 a flatiron133 is mountedl between the ltwo angle,- ironsf 6, 6- inasimilar.manner toV the. ilatl iron. 131.` ofet-hat tie-bolt. 11-13, towards thelWorking faceVY and? carries across piecev 3'4 engaged'inv that` partofthe rolling'tr-acle constituted by the second onefrorrr the bottom,ofthe three rolling track elements In addition, a-k removable pin 35isengaged, transversely in thatrolling tracht ele.- ment throughthefholes. on its-side faces, slightly underneathA the level. ofY thelower face: of thecross piece; 34:` Av tube-Z0, boltedat one endbetweenthe two anglelirons: 6 6 rests by its other end,.whch islocatedbetweenthetwo angle irons 7, 7 onthe'shank ofabolt 39 the posif.- tion of which, iny a pair. ofholes facing each other to-beselected out of a seriesl off pairs ofholes- 40 in these two? angleironsk 77 makesit possible to adjust at will thein-Y clinationof. thattube1 20 with,r respectto the Aanglelirons'. 6 along the workingfface.'lwo Hat irons 21,bolteclre-v spectively attwo.A points in registerinltheltwo an'gleirons 6, 6 are drilled with a series of holes andIshanlioifa bolt engaged into two' corresponding holes tol besel'ecte'd;in these series causes these two. anglev irons toy restlonltlie tube 9withv an adjustable inclination. At a lower level a tube 22 is arrangedbetween the angle irons 6, 6 and 7, 7 in the same manner as the tube 8.Lower down, a tube 24, bolted between the two angle irons 6, 6 is bracedon these angle irons by a bracing tube 25 also bolted between the angleirons 6, 6. Finally, about the bottom of the upright, two flat irons 26bolted on both sides of the tube are stopped with an adjustableinclination on the shank of a bolt to be mounted in one pair to beselected out of a series of pairs of holes drilled in the pair of angleirons 7, 7. On the tubes 20, on` the pairs of iiat irons 21, on thetubes 22, on the tubes 24 and on the pairs of flat irons 26 of twoconsecutive uprights, floors are mounted which constitute variousworking stations stepped in height and which may be arrangedhorizontally for the various inclinations of the working face andconsequently of the pair of angle irons 6, 6 along that working face.Against the two angle irons 7,7 and above the tube which supports thefloor of the highest working station, a tube 38 is welded forming aguard, or hand rail. The upper ends of the angle irons 6, 6 and 7, 7 areprovided with holes for the fastening of a gantry for supporting thepulley for hoisting the materials.

The apparatus also comprises a bearing element, in which the essentialelement is a tube 27 to be inserted between the angle irons 7, 7 and 6,6 and terminated, about the working surface by a rectangular tubularfastening part 28, the face of which, facing the working surface isdrilled with a hole. This tube may thus be secured normally to theWork-ing face by a bolt 5 and a nut 4 similarly to the rolling tracks 3.For constituting the bearing element, this assembly of the tube 27 andits fastening piece 28 is completed by two angle irons 29, 29, acting asrest pieces, the upper ends of which are welded on both sides of thefastening piece 28 and the lower ends of which are bolted on both sidesof a tube 30 which braces the tube 27 to which it is welded. The uprightis provided with two bolts 31 and 32 connecting the two angle irons,respectively of the two pairs 7, 7 and 3, 8. This upright, beingpositioned with the two angle irons of each pair on either side of thetubes 27 and 30, is ysupported by the shanks of the two bolts 31 and 32on the upper tube 27 of the bearing piece, and thus this bearing piecesupports the whole weight of the upright. Furthermore, this bearingpiece maintains the correct orientation of the upright by preventing allside warping thereof.

The apparatus also comprises an orientation bar consisting of twoelements 27a and 28a identical with the elements 27 and 28 of thebearing piece 27-30, and which is to be secured in the same manner,normally to the working face, at a higher level.

In order to pass from the arrangement of Figure l to the workingarrangement for casting the next concrete course, the first elements 2from below are dismantled, according to a known method disclosed in thetwo abovementioned patents, and again on all consecutive columns of poleelements, for re-assembling them, by means of their assembling rods 23above the third ones. By means of a hoist attached at P on the fasteningpart 28a of the orientation bar 27a-28a and tied at Q on the bolt 31mounted between the two angle irons 6, 6 the upright 6-6 is raised bythe height of a course corresponding to the vertical interval of twoconsecutive holes left free through the wall by the assembling rods 23which were used for securing the planking apparatus. The pin 3S isremoved from element 3 in which it is engaged and which has become thefirst one from the bottom for engaging it into the upper element whichhas become the second one. Should the hoist become slack, due to a Wrongoperation, the upright 6-6 is then suspended by the at iron 33 bearingon that pin 35. The bearing piece 27--30 is disassembled by removing thenut 4 and bolt 5 which secures it and during this operation the upright6-6 remains protected against any side warping by the 4 action of theorientation bar 27a-28a. The bearing piece 27-30 is again secured bymeans of its bolt S and nut 4 to be engaged in the upper hole of thewall. The hoist is then removed and the upright 6 6 then rests again byits bolt 31 on the bearing piece 27-30 thus displaced. The rst elements3 from the bottom are then disassembled for assembling them again abovethe third ones at the locations left by the removed elements 2. Theorientation bar 27a, 28a is then disassembled and raised by one course.The whole planking and scalolding apparatus is then, in the workingarrangement of the drawings, at a level which is higher by the height ofone course. In cases when the inclination of the wall to be erectedvaries with height, the bearing of the roller 19 on the working face iscontrolled by acting on the screw 36 so as to place the working stationsresting respectively on elements 20, 21, 22 and 26 and particularly themain working station resting on element 20 at the desired distance fromthe working face. By displacing the bracing bolts in the correspondingholes, the adjustable elements 20, 21, 22 and 26 are set horizontal and,consequently the floors resting on these elements. One may then proceedwith the casting of the next concrete course, hoisting the materials bymeans of a pulley hanging from a gantry shaped extension, not shown,which is to be Isecured at the upper ends of angle irons 6, 6 and 7, 7.

Numerous modifications may be made in the abovedescribed form ofembodiment with reference to the drawing, without departing from thescope of the invention. In particular, the nature of the semi-nishedproducts used for construction as well as the number and arrangement ofthe working stations may be chosen at will.

The use of the apparatus according to the invention brings about,especially in the case of high structures, a considerable vsaving inmaterials and labour as compared with usual methods, in which -ascaffolding is used over the entire height of the structure. Anotheradfvantage is that `the workmen are always placed at the height whichhas been selected as most suitable with respect to the portion of thewall being built.

What l claim is:

1. An apparatus for forming a bracket type scaffolding mounted slidinglyon Ithe built portion of a wall to be built by casting successiveconcrete courses in a planking held by columns of superposed poleelements in which the lowermost element is removed after the casting ofone course for securing this element above the uppermost element andholding the planking of the next course to be cast, said apparatuscomprising rectilinear elernents of a roller runway to be securedvertical- 1y, end to end, against the working face of the wall to beerected for forming a runway extending downwards along the poleelements, an upright for each one of these runways, a pair of rollersmounted on each one of these uprights, said pair of rollers to beengaged for rolling inside the runway, a bearing for each upright, saidbearing to be attached against the working face for supporting theweight of the upright while holding said upright -at the proper heightfor the construction of the course to be cast, and platforms to bemounted at various levels between two consecutive bearings for servingas work stations.

2. An apparatus for forming a bracket type scaffolding mounted slidinglyon the built portion of a wall to be built by casting successiveconcrete courses in a planking held by columns of superposed poleelements in which the lower-most element is removed after the casting ofone course for securing this element above the uppermost element andholding the planking of the next course to be cast, said `apparatuscomprising rectilinear elements of a roller track to be securedvertically, end to end, against the working face of the wail to beerected for forming a runway extending downwards along the poleelements, an upright for each one of these rolling tracks; a pairlofl`rollers :actuatedv eireael one of these uprfsi'rts; said) pair) ofrollersto be engaged for vrolling insdethe'ronwsr, anotherV pair: ofrollers assisted; on theupright undermeath the rst pair of`roilers, abearing for each upright seid hearing .to be attached against theworking Vface'l for` supporting* the weight 'of' the uprigh-t atanint'etinedatgipoint betiweeifthe rst and second pair of rollers whileholding4 said upright at the proper-height for the construction"of}thecou-rsefto'be cast, said luprighttending tol pivot by gravity about saidintermediate point'iniithadrectiorr torove the rst pair o ,rollersawayfrom, and the second-.pair orollers towards, said worki'r'ifg''faceV byurgingthe rollers of said first pair against said runways and therollers of said second pair -against said working face, and platforms tobe mounted at various levels between two consecutive bearings forserving as work stations.

3. An apparatus for forming a bracket type scaffolding mounted slidinglyon the erected portion of a wall to be built by casting successiveconcrete courses of equal height in a planking held by columns of poleelements superposed on one another in which the lowermost element isremoved after the casting of one course, thereby leaving free, in thebuilt portion of the wall, a hole 'which has been used for the fasteningof this element in that position for securing this same element abovethe uppermost element and holding the planking of the next course to becast, this apparatus com,"- prisin-g rectilinear roller runway elements,each one of these roller runway elements having the height of one courseto be cast, being of a prismatic tubular shape and having a yrear facedrilled with a hole and a front face provided with a longitudinal slot,the pole elements having to be extended downwards by a rolling track tobe formed vby mounting end to end a series of rolling track elementseach one of which is secured by its rear face against the working faceby bolting through the hole of said -rear face and of one of the holesleft free, in the erected portion of the wall, an upright for each oneof said roller runways, a pair of rollers mounted on each one of theseuprights, said pair of rollers to be engaged inside the roller runway,another pair of rollers mounted on the upright underneath the first pairof rollers, a bearing for each upright, said bearing to be securedagainst the working face for supporting the weight of the upright at apoint intermediate between the first and Second pairs of rollers, whilemaintaining this upright at the height required for the construction ofthe course to be erected, said upright tending to pivot by gravity-about said intermediate point in the direction to move said firstrollers away from, and said second rollers towards, said working face,by engaging the rollers of said rst pair behind the front face of theelements of said runway on either side of the slots formed in said frontfaces, and engaging the rollers of said second pair against said workingface, and platforms to be mounted at various levels between twoconsecutive bearings for serving as working stations.

4. An apparatus for forming a bracket type scaffolding mountedsl-idingly on the erected portion of a wall to be,

built, by casting successive concrete courses in a planking held bycolumns of pole elements superposed on one another, in which thelowermost element is removed after the casing of a course, while leavingfree in the erected portion of the wall a hole having previously servedfor securing said element in that position above the element occupyingthe topmost position and holding the planking for casting the nextcourse, said apparatus comp-rising rectilinear roller runway elements tobe secured vertically end to end against the working face of the wall tobe built for forming a roller runway extending downwards along said poleelements, an upright for each one of these roller runways, said uprightcomprising two rectilinear angle irons arranged parallel to each otherat a certain and relatively small spacing and on either side of a planeof 'symmetry "of this upright, two other! rectilinear .8111816 .irons.sufranged'y parallel to each other' at the sameA spacing as said-twotiret .angle-rons.`and'symmetriea11y with respect to said plane ofsymmetry of this upright, and .cross-stays and braces rigidly eonneetngA`said two .second angle irons with .said two .first angle irons, a pairof rollers mounted on eaeh one of said upriehts and protruding' betweenthe first two anale irons on the v.side opposite to the secondtwo-*angle irons,l saidnair of rollers vto be engaged for rolling insidethe roller runway, another pair,v of' rollers Imounted on .said uprightand protruding kbetween the Yfirst ,two angle irons above'tjhe firstpair of rollers, a bearing for each-upright to be secured 'normallyagainst the working face underneath the roller runway by engagement inone of the holes left free in the erected portion of the wall, saidupright thus secured against the working face being engaged between therst two angle irons and between the two other angle irons, whilesupporting the weight of the upright at a point intermediate said iirstand second pairs of rollers while maintaining said upright in a positionin which said upright is at the proper height for casting the course tobe built and in which the plane of symmetry of said upright extends atright angles to the working face, said upright tending to pivot bygravity about said intermediate point in the direction to move saidfirst rollers away from, and said second rollers towards, said workingface by engaging said first rollers against said runways and said secondrollers against said working face, and platforms to be mounted atvarious levels between two consecutive bearings for serving as workingstations.

5. An apparatus for forming a bracket type scaiolding mounted slidinglyon the erected portion of a wall to be built by casting successiveconcrete courses in a planking held by columns of superposed poleelements in which the lowermost element is removed after the casting ofone course for securing that element above the topmost element andholding the planking of the new course to be cast, said apparatuscomprising rectilinear roller runway elements to be secured verticallyend to end against the working face of the wall to be built, for forminga runway extending downwards along the pole elements, an upright foreach one of said roller runways, a pair of rollers mounted on each oneof said uprights, said pair of rollers to be engaged for rolling insidesaid roller runways, another pair of rollers mounted on the uprightunderneath the rst pair of rollers, a bearing for each upright, saidbearing to be secured against the working face for sup porting theweight of the upright at a point intermediate said first and secondpairs of rollers while holding said upright at the proper height forcasting the course to be built, said upright tending to pivot by gravityabout said intermediate -point in the direction to move said firstrollers away from, and said second rollers towards, said working face byengaging said rst rollers against said runway and said second rollersagainst said working face, means for adjusting the position of saidsecond pair of rollers relative to said upright and therefore theangular position of said upright to the vertical, and platforms to bemounted at various levels between two adjacent bearings, with anadjustable inclination lto constitute working stations arrangedhorizontally whatever may be the angular position of the upright to thevertical.

6. An apparatus for forming a bracket type scaffolding according toclaim 2, wherein each upright carries, above the first pair of rollersand at a height above said pair of rollers equal to the height of onerolling track element, a clip to be engaged inside the rolling trackbehind the front faces fof said rolling track, said clipopposing thetipping over of the upright about Ithe lower pair of rollers whendismantling the rolling track element in which the rollers of the firstpair are engaged.

7. An apparatus for forming a bracket type scaffolding according toclaim 3, wherein each rolling track element has side faces drilled withholes n register and which.A

-7 comprises, at least for some of the rolling track elements a pinwhich can bev engaged in these holes across a rolling track elementunderneath a clip engaged in said rolling track element, said pinsupporting the weight of the 11pright when the bearing is dismantled.

8. An apparatus for forming a bracket type scaiolding according to claim4, comprising in addition for each upright, an orientation bar to besecured normally against the working face between the rolling track andbearing by engagement in a hole which has been used for assembling aremoved .pole element, said orientation bar thus secured against theface being engaged between the first two angle irons and between theother two angle irons whilernairxtaining said upright in a-rpositioninwhich the plane of symmetry of said upright is oriented perpendicularlyto the'working face thus allowing the disassemblng lof thebearing withno risk of side warping of the upright.

References Cited the le of this patent UNITED STATES PATENTS

